Koh-I-Noor Ruling Pens are the perfect tool for drawing fine, precise lines with paint, ink or masking fluid. These oval ruling pens feature a hardened nickel-plated steel nib with a black plastic handle. The pen has a slot between two flexible metal jaws, which taper to a point. This enables the precise rendering of thin lines. Adjust the width of the line by turning the screw connecting the jaws. An effective tool for creating beautiful calligraphy and drawings. Dip the tip of the pen into ink or wet medium and change the angle of the pen to obtain a variety of marks.

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